KHACHIMO 180V-357V 250W Power Supply OT 250/120-277/700 P5

250 W ATX power supply

This 250 W ATX unit delivers 80 PLUS Gold efficiency across a 120 V to 277 V input range. It targets builders who need dependable power for modest desktop systems or Modern Standby PCs. Resonant LLC topology with DC-to-DC conversion keeps output clean and reduces coil whine. The compact design fits standard ATX bays and supports fast wake-from-sleep transitions.

Suited to efficient low-power builds

Ideal for compact workstations, home-office PCs or secondary rigs where quiet operation and low idle draw matter. The zero RPM fan mode stays silent at light and medium loads while Modern Standby compatibility enables instant resume. Builders chasing high-wattage headroom for multi-GPU arrays or extreme overclocking should look elsewhere. The 250 W ceiling also rules out power-hungry workstation cards.

Steady output under continuous load

Gold-rated efficiency limits waste heat so internal temperatures stay lower during long sessions. Resonant LLC and DC-to-DC stages maintain tight voltage regulation when the system runs sustained workloads. The fan remains off until thermal sensors demand airflow, then ramps gradually to avoid sudden noise spikes. This behaviour keeps acoustics consistent whether the PC idles overnight or crunches data for hours.